run code in 200+ php & hhvm versions
Bugs & Features
<?php $email_body ="<html><head></head><body></body>"; echo str_replace("<body>","<body style='font-family:Georgia, Serif !important'",$email_body);
based on bZaIo

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)